Best temperature for drinking water
Water makes up about 65% of the human body. Does drinking water that is too hot cause cancer? I've heard that by the time you feel thirsty, it's already too late. Is that true? Why should we avoid drinking too much water before and after meals?
Can drinking hot water cause cancer?
Frequent consumption of extremely hot food and drinks may pose health risks.
Hot drinks or food at 65°C (149°F) or above can indeed increase the risk of esophageal cancer. This is because such high temperatures can cause physical damage to the mucosa in the esophagus. When the mucosa is damaged, it becomes more susceptible to irritation from gastric acid reflux. This repeated damage and irritation can lead to cell mutation, which in turn increases the risk of developing esophageal cancer.
Is it too late to drink water when you are thirsty?
Thirst is a signal that the body is dehydrated. When you feel thirsty, it means that your cells are lacking water.
To avoid waiting until you're thirsty to drink, it is recommended to drink water regularly at fixed times, as well as when you feel thirsty. In other words, you should drink water in the morning, in the evening, and also between meals.
Why shouldn't you drink a lot of water before and after meals?
Drinking a lot of water before a meal can dilute digestive juices and reduce the concentration of gastric acid. If you eat at this time, the activity of digestive enzymes may be reduced, which can lead to indigestion.
The bactericidal effect of gastric acid will also be weakened, which may cause acute gastroenteritis or diarrhea. Therefore, if you're not particularly thirsty, it's not recommended to drink too much water before meals.
It's also not recommended to drink large amounts of water immediately after a meal, as this can lead to acute gastric dilation.
Drinking water scientifically is good for your health
Recommended Water Intake
A normal adult should drink 1500-1700 ml of water per day. It is recommended to drink small amounts frequently (about 200 ml at a time), and boiled water is preferred. People with glaucoma, heart disease, or abnormal kidney function should follow their doctor's advice on how to drink water.
Best Water Temperature for Drinking
When drinking water, the temperature should be between 25°C and 40°C (77°F to 104°F), and it is best not to exceed 65°C (149°F).
Recommended Times to Drink Water
- Replenish water when you wake up in the morning.
- Drink small amounts before going to bed (but avoid drinking too much to prevent waking up during the night).
- Spread your water intake evenly throughout the day.
water temperature and Health
Health Tips on Drinking Water
- Frequent consumption of hot food and drinks may pose health risks.
- Thirst is a sign of dehydration. When you feel thirsty, it means that your cells are dehydrated.
- Drinking a lot of water before a meal may dilute digestive juices, reduce the concentration of gastric acid, and lead to indigestion, acute gastroenteritis, or diarrhea.
- A normal adult should drink 1500-1700 ml of water per day, and boiled water is preferred.
- People with glaucoma, heart disease, or abnormal kidney function should follow their doctor's advice on how to drink water.
- When drinking water, the temperature should be between 25°C and 40°C, and it is best not to exceed 65°C.
Best Temperatures for Different Needs
| Scenario | Recommended Temp | Why It Works |
|---|---|---|
| Morning hydration | Warm (35–40°C) | Kickstarts metabolism, detox |
| Post-workout | Cool (10–15°C) | Rapid rehydration, cools the body |
| Mealtime | Room temp (~25°C) | Avoids diluting digestive enzymes |